Comments on: Lightning Calculators II: The Methods http://myreckonings.com/wordpress/2008/04/15/lightning-calculators-ii-the-methods/ Lost Art in the Mathematical Sciences Sat, 04 Feb 2012 12:01:39 +0000 http://wordpress.org/?v=2.2.1 By: Mental Arithmetic Exercises http://myreckonings.com/wordpress/2008/04/15/lightning-calculators-ii-the-methods/#comment-1961 Mental Arithmetic Exercises Wed, 02 Feb 2011 13:24:28 +0000 http://myreckonings.com/wordpress/2008/04/15/lightning-calculators-ii-the-methods/#comment-1961 there is some serious good stuff here ... one of my favourite stories is of gauss (?) who at primary school added all the numbers from 1 to 100 in a few seconds ... a task the teacher gave the class to keep them busy :-) there is some serious good stuff here … one of my favourite stories is of gauss (?) who at primary school added all the numbers from 1 to 100 in a few seconds … a task the teacher gave the class to keep them busy :-)

]]> By: jenizaro http://myreckonings.com/wordpress/2008/04/15/lightning-calculators-ii-the-methods/#comment-1423 jenizaro Thu, 07 Jan 2010 01:18:37 +0000 http://myreckonings.com/wordpress/2008/04/15/lightning-calculators-ii-the-methods/#comment-1423 <p>Is there a mistake in Superman's calculation? Shouldn't it be 3,200?</p> <em><p>You're right! I sort of made a sly comment about it in the second bullet in the list to the left of the picture, about usually having more success at multiplication than Superman demonstrates. Nice catch. --- Ron</p></em> Is there a mistake in Superman’s calculation? Shouldn’t it be 3,200?

You’re right! I sort of made a sly comment about it in the second bullet in the list to the left of the picture, about usually having more success at multiplication than Superman demonstrates. Nice catch. — Ron

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